./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12feb0d-7e0a-4885-9af4-a0cf81636681/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12feb0d-7e0a-4885-9af4-a0cf81636681/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12feb0d-7e0a-4885-9af4-a0cf81636681/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12feb0d-7e0a-4885-9af4-a0cf81636681/bin/utaipan-verify-SwPr7d2a91/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12feb0d-7e0a-4885-9af4-a0cf81636681/bin/utaipan-verify-SwPr7d2a91/config/svcomp-MemCleanup-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12feb0d-7e0a-4885-9af4-a0cf81636681/bin/utaipan-verify-SwPr7d2a91 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash da01f7e29b47732481465e941f69a1c8f9dd5529ae81cb8448eb7568570e2356 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-25 00:09:21,756 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-25 00:09:21,885 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12feb0d-7e0a-4885-9af4-a0cf81636681/bin/utaipan-verify-SwPr7d2a91/config/svcomp-MemCleanup-32bit-Taipan_Default.epf [2023-11-25 00:09:21,890 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-25 00:09:21,891 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-25 00:09:21,924 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-25 00:09:21,925 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-25 00:09:21,926 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-25 00:09:21,927 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-25 00:09:21,927 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-25 00:09:21,928 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-25 00:09:21,928 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-25 00:09:21,929 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-25 00:09:21,929 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-25 00:09:21,930 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-25 00:09:21,931 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-25 00:09:21,931 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-25 00:09:21,932 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-25 00:09:21,932 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-25 00:09:21,933 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-25 00:09:21,933 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-25 00:09:21,934 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-25 00:09:21,934 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-25 00:09:21,935 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-25 00:09:21,935 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-25 00:09:21,936 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-25 00:09:21,936 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-25 00:09:21,937 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-25 00:09:21,937 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-25 00:09:21,937 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-25 00:09:21,938 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-25 00:09:21,938 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-25 00:09:21,939 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-25 00:09:21,939 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-25 00:09:21,939 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-25 00:09:21,939 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-25 00:09:21,940 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-25 00:09:21,940 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-25 00:09:21,940 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-25 00:09:21,940 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-25 00:09:21,941 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-25 00:09:21,941 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-25 00:09:21,941 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-25 00:09:21,941 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:09:21,942 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-25 00:09:21,942 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-25 00:09:21,942 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-25 00:09:21,942 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-25 00:09:21,943 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-25 00:09:21,943 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-25 00:09:21,943 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-25 00:09:21,943 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12feb0d-7e0a-4885-9af4-a0cf81636681/bin/utaipan-verify-SwPr7d2a91/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12feb0d-7e0a-4885-9af4-a0cf81636681/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> da01f7e29b47732481465e941f69a1c8f9dd5529ae81cb8448eb7568570e2356 [2023-11-25 00:09:22,201 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-25 00:09:22,226 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-25 00:09:22,229 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-25 00:09:22,230 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-25 00:09:22,231 INFO L274 PluginConnector]: CDTParser initialized [2023-11-25 00:09:22,232 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12feb0d-7e0a-4885-9af4-a0cf81636681/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i [2023-11-25 00:09:25,387 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-25 00:09:25,804 INFO L384 CDTParser]: Found 1 translation units. [2023-11-25 00:09:25,805 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12feb0d-7e0a-4885-9af4-a0cf81636681/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i [2023-11-25 00:09:25,825 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12feb0d-7e0a-4885-9af4-a0cf81636681/bin/utaipan-verify-SwPr7d2a91/data/bf92beb7c/0e5a40fa7d684dc68621ca489d93d0fe/FLAG79d291267 [2023-11-25 00:09:25,839 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12feb0d-7e0a-4885-9af4-a0cf81636681/bin/utaipan-verify-SwPr7d2a91/data/bf92beb7c/0e5a40fa7d684dc68621ca489d93d0fe [2023-11-25 00:09:25,842 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-25 00:09:25,843 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-25 00:09:25,845 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-25 00:09:25,845 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-25 00:09:25,851 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-25 00:09:25,852 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:09:25" (1/1) ... [2023-11-25 00:09:25,853 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73df16a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:09:25, skipping insertion in model container [2023-11-25 00:09:25,853 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:09:25" (1/1) ... [2023-11-25 00:09:25,925 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-25 00:09:26,569 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:09:26,594 ERROR L324 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-11-25 00:09:26,598 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7b1935e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:09:26, skipping insertion in model container [2023-11-25 00:09:26,599 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-25 00:09:26,599 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-25 00:09:26,601 INFO L158 Benchmark]: Toolchain (without parser) took 756.89ms. Allocated memory is still 159.4MB. Free memory was 110.8MB in the beginning and 90.3MB in the end (delta: 20.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-25 00:09:26,602 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 159.4MB. Free memory is still 105.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-25 00:09:26,603 INFO L158 Benchmark]: CACSL2BoogieTranslator took 754.50ms. Allocated memory is still 159.4MB. Free memory was 110.8MB in the beginning and 90.3MB in the end (delta: 20.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-25 00:09:26,605 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 159.4MB. Free memory is still 105.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 754.50ms. Allocated memory is still 159.4MB. Free memory was 110.8MB in the beginning and 90.3MB in the end (delta: 20.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 815]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12feb0d-7e0a-4885-9af4-a0cf81636681/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12feb0d-7e0a-4885-9af4-a0cf81636681/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12feb0d-7e0a-4885-9af4-a0cf81636681/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12feb0d-7e0a-4885-9af4-a0cf81636681/bin/utaipan-verify-SwPr7d2a91/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12feb0d-7e0a-4885-9af4-a0cf81636681/bin/utaipan-verify-SwPr7d2a91/config/svcomp-MemCleanup-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12feb0d-7e0a-4885-9af4-a0cf81636681/bin/utaipan-verify-SwPr7d2a91 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash da01f7e29b47732481465e941f69a1c8f9dd5529ae81cb8448eb7568570e2356 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-25 00:09:29,075 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-25 00:09:29,168 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12feb0d-7e0a-4885-9af4-a0cf81636681/bin/utaipan-verify-SwPr7d2a91/config/svcomp-MemCleanup-32bit-Taipan_Bitvector.epf [2023-11-25 00:09:29,175 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-25 00:09:29,175 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-25 00:09:29,205 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-25 00:09:29,206 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-25 00:09:29,206 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-25 00:09:29,207 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-25 00:09:29,208 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-25 00:09:29,209 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-25 00:09:29,209 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-25 00:09:29,210 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-25 00:09:29,210 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-25 00:09:29,211 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-25 00:09:29,212 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-25 00:09:29,212 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-25 00:09:29,213 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-25 00:09:29,214 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-25 00:09:29,214 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-25 00:09:29,215 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-25 00:09:29,215 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-25 00:09:29,216 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-25 00:09:29,216 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-25 00:09:29,217 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-25 00:09:29,217 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-25 00:09:29,217 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-25 00:09:29,218 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-25 00:09:29,218 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-25 00:09:29,219 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-25 00:09:29,219 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-25 00:09:29,220 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-25 00:09:29,220 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-25 00:09:29,220 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-25 00:09:29,221 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-25 00:09:29,221 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-25 00:09:29,221 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-25 00:09:29,222 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-25 00:09:29,222 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-25 00:09:29,222 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-25 00:09:29,222 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:09:29,223 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-25 00:09:29,223 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-25 00:09:29,223 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-25 00:09:29,224 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-25 00:09:29,224 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-25 00:09:29,224 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-25 00:09:29,224 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-25 00:09:29,225 INFO L153 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12feb0d-7e0a-4885-9af4-a0cf81636681/bin/utaipan-verify-SwPr7d2a91/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12feb0d-7e0a-4885-9af4-a0cf81636681/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> da01f7e29b47732481465e941f69a1c8f9dd5529ae81cb8448eb7568570e2356 [2023-11-25 00:09:29,577 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-25 00:09:29,601 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-25 00:09:29,604 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-25 00:09:29,606 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-25 00:09:29,606 INFO L274 PluginConnector]: CDTParser initialized [2023-11-25 00:09:29,608 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12feb0d-7e0a-4885-9af4-a0cf81636681/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i [2023-11-25 00:09:32,900 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-25 00:09:33,356 INFO L384 CDTParser]: Found 1 translation units. [2023-11-25 00:09:33,359 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12feb0d-7e0a-4885-9af4-a0cf81636681/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i [2023-11-25 00:09:33,389 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12feb0d-7e0a-4885-9af4-a0cf81636681/bin/utaipan-verify-SwPr7d2a91/data/4f66d750b/bc741aaa3b20424aa894c1dc2b5ff720/FLAG33a7b0c15 [2023-11-25 00:09:33,414 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12feb0d-7e0a-4885-9af4-a0cf81636681/bin/utaipan-verify-SwPr7d2a91/data/4f66d750b/bc741aaa3b20424aa894c1dc2b5ff720 [2023-11-25 00:09:33,421 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-25 00:09:33,424 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-25 00:09:33,428 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-25 00:09:33,428 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-25 00:09:33,434 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-25 00:09:33,437 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:09:33" (1/1) ... [2023-11-25 00:09:33,438 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3edcbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:09:33, skipping insertion in model container [2023-11-25 00:09:33,439 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:09:33" (1/1) ... [2023-11-25 00:09:33,531 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-25 00:09:34,406 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:09:34,434 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-25 00:09:34,457 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-25 00:09:34,589 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:09:34,594 INFO L202 MainTranslator]: Completed pre-run [2023-11-25 00:09:34,676 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:09:34,727 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:09:34,735 INFO L206 MainTranslator]: Completed translation [2023-11-25 00:09:34,735 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:09:34 WrapperNode [2023-11-25 00:09:34,736 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-25 00:09:34,737 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-25 00:09:34,737 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-25 00:09:34,737 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-25 00:09:34,746 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:09:34" (1/1) ... [2023-11-25 00:09:34,805 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:09:34" (1/1) ... [2023-11-25 00:09:34,917 INFO L138 Inliner]: procedures = 211, calls = 288, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1045 [2023-11-25 00:09:34,919 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-25 00:09:34,920 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-25 00:09:34,920 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-25 00:09:34,920 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-25 00:09:34,931 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:09:34" (1/1) ... [2023-11-25 00:09:34,931 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:09:34" (1/1) ... [2023-11-25 00:09:34,948 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:09:34" (1/1) ... [2023-11-25 00:09:34,948 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:09:34" (1/1) ... [2023-11-25 00:09:35,030 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:09:34" (1/1) ... [2023-11-25 00:09:35,051 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:09:34" (1/1) ... [2023-11-25 00:09:35,057 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:09:34" (1/1) ... [2023-11-25 00:09:35,078 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:09:34" (1/1) ... [2023-11-25 00:09:35,089 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-25 00:09:35,090 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-25 00:09:35,091 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-25 00:09:35,091 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-25 00:09:35,092 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:09:34" (1/1) ... [2023-11-25 00:09:35,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:09:35,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12feb0d-7e0a-4885-9af4-a0cf81636681/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:09:35,141 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12feb0d-7e0a-4885-9af4-a0cf81636681/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-25 00:09:35,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12feb0d-7e0a-4885-9af4-a0cf81636681/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-25 00:09:35,197 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-11-25 00:09:35,197 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-11-25 00:09:35,199 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-25 00:09:35,199 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-25 00:09:35,199 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-25 00:09:35,200 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-25 00:09:35,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-25 00:09:35,200 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-25 00:09:35,200 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-25 00:09:35,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-25 00:09:35,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-25 00:09:35,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-25 00:09:35,201 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-25 00:09:35,201 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-25 00:09:35,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-25 00:09:35,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-25 00:09:35,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-25 00:09:35,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-25 00:09:35,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-25 00:09:35,458 INFO L241 CfgBuilder]: Building ICFG [2023-11-25 00:09:35,460 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-25 00:09:42,945 INFO L282 CfgBuilder]: Performing block encoding [2023-11-25 00:09:42,988 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-25 00:09:42,988 INFO L309 CfgBuilder]: Removed 63 assume(true) statements. [2023-11-25 00:09:42,989 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:09:42 BoogieIcfgContainer [2023-11-25 00:09:42,989 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-25 00:09:42,992 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-25 00:09:42,992 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-25 00:09:42,996 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-25 00:09:42,996 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 12:09:33" (1/3) ... [2023-11-25 00:09:42,997 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7db69d16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:09:42, skipping insertion in model container [2023-11-25 00:09:42,998 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:09:34" (2/3) ... [2023-11-25 00:09:42,998 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7db69d16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:09:42, skipping insertion in model container [2023-11-25 00:09:42,998 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:09:42" (3/3) ... [2023-11-25 00:09:43,000 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test2-2.i [2023-11-25 00:09:43,021 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-25 00:09:43,021 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-25 00:09:43,075 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-25 00:09:43,082 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@afd1e9f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-25 00:09:43,083 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-25 00:09:43,088 INFO L276 IsEmpty]: Start isEmpty. Operand has 212 states, 196 states have (on average 1.6785714285714286) internal successors, (329), 205 states have internal predecessors, (329), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-25 00:09:43,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-25 00:09:43,098 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:09:43,098 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:09:43,099 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-25 00:09:43,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:09:43,113 INFO L85 PathProgramCache]: Analyzing trace with hash 588329387, now seen corresponding path program 1 times [2023-11-25 00:09:43,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-25 00:09:43,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [671449160] [2023-11-25 00:09:43,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:09:43,132 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-25 00:09:43,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12feb0d-7e0a-4885-9af4-a0cf81636681/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-25 00:09:43,142 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12feb0d-7e0a-4885-9af4-a0cf81636681/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-25 00:09:43,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12feb0d-7e0a-4885-9af4-a0cf81636681/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-25 00:09:43,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:09:43,440 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-25 00:09:43,446 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:09:43,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:09:43,475 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:09:43,476 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-25 00:09:43,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [671449160] [2023-11-25 00:09:43,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [671449160] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:09:43,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:09:43,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-25 00:09:43,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740194538] [2023-11-25 00:09:43,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:09:43,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-25 00:09:43,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-25 00:09:43,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-25 00:09:43,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-25 00:09:43,538 INFO L87 Difference]: Start difference. First operand has 212 states, 196 states have (on average 1.6785714285714286) internal successors, (329), 205 states have internal predecessors, (329), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:09:43,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:09:43,619 INFO L93 Difference]: Finished difference Result 210 states and 277 transitions. [2023-11-25 00:09:43,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-25 00:09:43,622 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-11-25 00:09:43,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:09:43,635 INFO L225 Difference]: With dead ends: 210 [2023-11-25 00:09:43,635 INFO L226 Difference]: Without dead ends: 209 [2023-11-25 00:09:43,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-25 00:09:43,641 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-25 00:09:43,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 272 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-25 00:09:43,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2023-11-25 00:09:43,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2023-11-25 00:09:43,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 195 states have (on average 1.323076923076923) internal successors, (258), 202 states have internal predecessors, (258), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-25 00:09:43,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 276 transitions. [2023-11-25 00:09:43,700 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 276 transitions. Word has length 10 [2023-11-25 00:09:43,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:09:43,701 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 276 transitions. [2023-11-25 00:09:43,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:09:43,701 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 276 transitions. [2023-11-25 00:09:43,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-25 00:09:43,702 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:09:43,702 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:09:43,710 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12feb0d-7e0a-4885-9af4-a0cf81636681/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-11-25 00:09:43,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12feb0d-7e0a-4885-9af4-a0cf81636681/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-25 00:09:43,906 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-25 00:09:43,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:09:43,906 INFO L85 PathProgramCache]: Analyzing trace with hash 2000743177, now seen corresponding path program 1 times [2023-11-25 00:09:43,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-25 00:09:43,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2134838273] [2023-11-25 00:09:43,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:09:43,908 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-25 00:09:43,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12feb0d-7e0a-4885-9af4-a0cf81636681/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-25 00:09:43,909 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12feb0d-7e0a-4885-9af4-a0cf81636681/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-25 00:09:43,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12feb0d-7e0a-4885-9af4-a0cf81636681/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-25 00:09:44,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:09:44,141 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-25 00:09:44,144 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:09:44,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:09:44,265 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:09:44,266 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-25 00:09:44,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2134838273] [2023-11-25 00:09:44,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2134838273] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:09:44,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:09:44,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-25 00:09:44,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450694398] [2023-11-25 00:09:44,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:09:44,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-25 00:09:44,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-25 00:09:44,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-25 00:09:44,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:09:44,276 INFO L87 Difference]: Start difference. First operand 209 states and 276 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:09:44,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:09:44,956 INFO L93 Difference]: Finished difference Result 339 states and 452 transitions. [2023-11-25 00:09:44,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-25 00:09:44,957 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-11-25 00:09:44,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:09:44,961 INFO L225 Difference]: With dead ends: 339 [2023-11-25 00:09:44,961 INFO L226 Difference]: Without dead ends: 339 [2023-11-25 00:09:44,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:09:44,963 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 163 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-25 00:09:44,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 499 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-25 00:09:44,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2023-11-25 00:09:45,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 308. [2023-11-25 00:09:45,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 289 states have (on average 1.328719723183391) internal successors, (384), 301 states have internal predecessors, (384), 15 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-25 00:09:45,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 412 transitions. [2023-11-25 00:09:45,033 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 412 transitions. Word has length 12 [2023-11-25 00:09:45,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:09:45,034 INFO L495 AbstractCegarLoop]: Abstraction has 308 states and 412 transitions. [2023-11-25 00:09:45,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:09:45,035 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 412 transitions. [2023-11-25 00:09:45,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-25 00:09:45,036 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:09:45,037 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:09:45,043 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12feb0d-7e0a-4885-9af4-a0cf81636681/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-11-25 00:09:45,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12feb0d-7e0a-4885-9af4-a0cf81636681/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-25 00:09:45,240 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-25 00:09:45,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:09:45,241 INFO L85 PathProgramCache]: Analyzing trace with hash 2002590219, now seen corresponding path program 1 times [2023-11-25 00:09:45,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-25 00:09:45,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1906355634] [2023-11-25 00:09:45,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:09:45,243 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-25 00:09:45,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12feb0d-7e0a-4885-9af4-a0cf81636681/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-25 00:09:45,244 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12feb0d-7e0a-4885-9af4-a0cf81636681/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-25 00:09:45,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12feb0d-7e0a-4885-9af4-a0cf81636681/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-25 00:09:45,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:09:45,487 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-25 00:09:45,491 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:09:45,539 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-25 00:09:45,541 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-25 00:09:45,542 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-25 00:09:45,559 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 39 [2023-11-25 00:09:45,664 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-25 00:09:45,665 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 26 [2023-11-25 00:09:45,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:09:45,690 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:09:45,690 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-25 00:09:45,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1906355634] [2023-11-25 00:09:45,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1906355634] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:09:45,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:09:45,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-25 00:09:45,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136231344] [2023-11-25 00:09:45,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:09:45,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-25 00:09:45,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-25 00:09:45,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-25 00:09:45,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-25 00:09:45,693 INFO L87 Difference]: Start difference. First operand 308 states and 412 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:09:49,941 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-25 00:09:52,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:09:52,914 INFO L93 Difference]: Finished difference Result 419 states and 572 transitions. [2023-11-25 00:09:52,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-25 00:09:52,916 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-11-25 00:09:52,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:09:52,919 INFO L225 Difference]: With dead ends: 419 [2023-11-25 00:09:52,920 INFO L226 Difference]: Without dead ends: 419 [2023-11-25 00:09:52,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-25 00:09:52,921 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 168 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 674 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2023-11-25 00:09:52,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 674 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 180 Invalid, 1 Unknown, 0 Unchecked, 7.1s Time] [2023-11-25 00:09:52,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2023-11-25 00:09:52,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 307. [2023-11-25 00:09:52,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 288 states have (on average 1.3263888888888888) internal successors, (382), 300 states have internal predecessors, (382), 15 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-25 00:09:52,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 410 transitions. [2023-11-25 00:09:52,945 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 410 transitions. Word has length 12 [2023-11-25 00:09:52,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:09:52,945 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 410 transitions. [2023-11-25 00:09:52,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:09:52,946 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 410 transitions. [2023-11-25 00:09:52,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-25 00:09:52,949 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:09:52,950 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:09:52,963 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12feb0d-7e0a-4885-9af4-a0cf81636681/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-11-25 00:09:53,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12feb0d-7e0a-4885-9af4-a0cf81636681/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-25 00:09:53,154 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-25 00:09:53,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:09:53,154 INFO L85 PathProgramCache]: Analyzing trace with hash -560959006, now seen corresponding path program 1 times [2023-11-25 00:09:53,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-25 00:09:53,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [781267794] [2023-11-25 00:09:53,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:09:53,156 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-25 00:09:53,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12feb0d-7e0a-4885-9af4-a0cf81636681/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-25 00:09:53,158 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12feb0d-7e0a-4885-9af4-a0cf81636681/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-25 00:09:53,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12feb0d-7e0a-4885-9af4-a0cf81636681/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-25 00:09:53,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:09:53,794 INFO L262 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-25 00:09:53,799 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:09:53,831 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-25 00:09:53,831 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:09:53,832 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-25 00:09:53,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [781267794] [2023-11-25 00:09:53,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [781267794] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:09:53,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:09:53,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-25 00:09:53,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491215181] [2023-11-25 00:09:53,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:09:53,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-25 00:09:53,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-25 00:09:53,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-25 00:09:53,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-25 00:09:53,835 INFO L87 Difference]: Start difference. First operand 307 states and 410 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-25 00:09:53,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:09:53,998 INFO L93 Difference]: Finished difference Result 315 states and 402 transitions. [2023-11-25 00:09:53,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-25 00:09:53,998 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 81 [2023-11-25 00:09:53,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:09:54,001 INFO L225 Difference]: With dead ends: 315 [2023-11-25 00:09:54,001 INFO L226 Difference]: Without dead ends: 315 [2023-11-25 00:09:54,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-25 00:09:54,003 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 36 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-25 00:09:54,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 705 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-25 00:09:54,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2023-11-25 00:09:54,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 313. [2023-11-25 00:09:54,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 294 states have (on average 1.2653061224489797) internal successors, (372), 306 states have internal predecessors, (372), 15 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-25 00:09:54,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 400 transitions. [2023-11-25 00:09:54,017 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 400 transitions. Word has length 81 [2023-11-25 00:09:54,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:09:54,017 INFO L495 AbstractCegarLoop]: Abstraction has 313 states and 400 transitions. [2023-11-25 00:09:54,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-25 00:09:54,018 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 400 transitions. [2023-11-25 00:09:54,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-25 00:09:54,021 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:09:54,021 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:09:54,037 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12feb0d-7e0a-4885-9af4-a0cf81636681/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-25 00:09:54,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12feb0d-7e0a-4885-9af4-a0cf81636681/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-25 00:09:54,232 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-25 00:09:54,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:09:54,233 INFO L85 PathProgramCache]: Analyzing trace with hash -484998930, now seen corresponding path program 1 times [2023-11-25 00:09:54,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-25 00:09:54,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [160293658] [2023-11-25 00:09:54,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:09:54,235 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-25 00:09:54,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12feb0d-7e0a-4885-9af4-a0cf81636681/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-25 00:09:54,236 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12feb0d-7e0a-4885-9af4-a0cf81636681/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-25 00:09:54,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12feb0d-7e0a-4885-9af4-a0cf81636681/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-25 00:09:54,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:09:54,898 INFO L262 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-25 00:09:54,903 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:09:54,935 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:09:54,936 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:09:54,936 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-25 00:09:54,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [160293658] [2023-11-25 00:09:54,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [160293658] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:09:54,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:09:54,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-25 00:09:54,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599900500] [2023-11-25 00:09:54,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:09:54,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-25 00:09:54,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-25 00:09:54,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-25 00:09:54,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-25 00:09:54,939 INFO L87 Difference]: Start difference. First operand 313 states and 400 transitions. Second operand has 4 states, 3 states have (on average 25.666666666666668) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-25 00:09:55,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:09:55,038 INFO L93 Difference]: Finished difference Result 315 states and 403 transitions. [2023-11-25 00:09:55,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-25 00:09:55,040 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 25.666666666666668) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 81 [2023-11-25 00:09:55,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:09:55,042 INFO L225 Difference]: With dead ends: 315 [2023-11-25 00:09:55,043 INFO L226 Difference]: Without dead ends: 315 [2023-11-25 00:09:55,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-25 00:09:55,044 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 1 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 773 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-25 00:09:55,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 773 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-25 00:09:55,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2023-11-25 00:09:55,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 315. [2023-11-25 00:09:55,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 295 states have (on average 1.2677966101694915) internal successors, (374), 308 states have internal predecessors, (374), 15 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 5 states have call predecessors, (14), 13 states have call successors, (14) [2023-11-25 00:09:55,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 403 transitions. [2023-11-25 00:09:55,059 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 403 transitions. Word has length 81 [2023-11-25 00:09:55,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:09:55,060 INFO L495 AbstractCegarLoop]: Abstraction has 315 states and 403 transitions. [2023-11-25 00:09:55,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 25.666666666666668) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-25 00:09:55,060 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 403 transitions. [2023-11-25 00:09:55,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-11-25 00:09:55,063 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:09:55,063 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:09:55,083 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12feb0d-7e0a-4885-9af4-a0cf81636681/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-11-25 00:09:55,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12feb0d-7e0a-4885-9af4-a0cf81636681/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-25 00:09:55,279 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-25 00:09:55,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:09:55,280 INFO L85 PathProgramCache]: Analyzing trace with hash -933938814, now seen corresponding path program 1 times [2023-11-25 00:09:55,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-25 00:09:55,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1892784489] [2023-11-25 00:09:55,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:09:55,282 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-25 00:09:55,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12feb0d-7e0a-4885-9af4-a0cf81636681/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-25 00:09:55,284 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12feb0d-7e0a-4885-9af4-a0cf81636681/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-25 00:09:55,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12feb0d-7e0a-4885-9af4-a0cf81636681/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-25 00:09:55,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:09:55,930 INFO L262 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-25 00:09:55,935 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:09:55,982 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-25 00:09:55,983 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-25 00:09:56,115 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-25 00:09:56,115 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-25 00:09:56,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1892784489] [2023-11-25 00:09:56,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1892784489] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-25 00:09:56,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2102979946] [2023-11-25 00:09:56,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:09:56,116 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-25 00:09:56,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12feb0d-7e0a-4885-9af4-a0cf81636681/bin/utaipan-verify-SwPr7d2a91/cvc4 [2023-11-25 00:09:56,122 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12feb0d-7e0a-4885-9af4-a0cf81636681/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-25 00:09:56,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12feb0d-7e0a-4885-9af4-a0cf81636681/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2023-11-25 00:09:56,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:09:56,846 INFO L262 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-25 00:09:56,850 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:09:57,155 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-25 00:09:57,156 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:09:57,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2102979946] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:09:57,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-25 00:09:57,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 10 [2023-11-25 00:09:57,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425643826] [2023-11-25 00:09:57,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:09:57,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-25 00:09:57,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-25 00:09:57,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-25 00:09:57,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-25 00:09:57,159 INFO L87 Difference]: Start difference. First operand 315 states and 403 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-25 00:10:00,322 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-25 00:10:02,331 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-25 00:10:05,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:10:05,287 INFO L93 Difference]: Finished difference Result 328 states and 410 transitions. [2023-11-25 00:10:05,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-25 00:10:05,288 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 83 [2023-11-25 00:10:05,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:10:05,290 INFO L225 Difference]: With dead ends: 328 [2023-11-25 00:10:05,291 INFO L226 Difference]: Without dead ends: 328 [2023-11-25 00:10:05,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-11-25 00:10:05,292 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 432 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 15 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2023-11-25 00:10:05,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [432 Valid, 425 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 93 Invalid, 2 Unknown, 0 Unchecked, 8.1s Time] [2023-11-25 00:10:05,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2023-11-25 00:10:05,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 259. [2023-11-25 00:10:05,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 244 states have (on average 1.2336065573770492) internal successors, (301), 252 states have internal predecessors, (301), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2023-11-25 00:10:05,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 320 transitions. [2023-11-25 00:10:05,302 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 320 transitions. Word has length 83 [2023-11-25 00:10:05,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:10:05,303 INFO L495 AbstractCegarLoop]: Abstraction has 259 states and 320 transitions. [2023-11-25 00:10:05,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-25 00:10:05,304 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 320 transitions. [2023-11-25 00:10:05,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-25 00:10:05,305 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:10:05,306 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:10:05,326 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12feb0d-7e0a-4885-9af4-a0cf81636681/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-11-25 00:10:05,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12feb0d-7e0a-4885-9af4-a0cf81636681/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2023-11-25 00:10:05,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12feb0d-7e0a-4885-9af4-a0cf81636681/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12feb0d-7e0a-4885-9af4-a0cf81636681/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt [2023-11-25 00:10:05,719 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-25 00:10:05,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:10:05,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1995822790, now seen corresponding path program 1 times [2023-11-25 00:10:05,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-25 00:10:05,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1168304240] [2023-11-25 00:10:05,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:10:05,721 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-25 00:10:05,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12feb0d-7e0a-4885-9af4-a0cf81636681/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-25 00:10:05,722 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12feb0d-7e0a-4885-9af4-a0cf81636681/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-25 00:10:05,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12feb0d-7e0a-4885-9af4-a0cf81636681/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-11-25 00:10:06,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:10:06,435 INFO L262 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-25 00:10:06,439 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:10:06,491 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-25 00:10:06,491 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-25 00:10:06,603 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-25 00:10:06,603 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-25 00:10:06,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1168304240] [2023-11-25 00:10:06,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1168304240] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-25 00:10:06,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [338966831] [2023-11-25 00:10:06,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:10:06,604 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-25 00:10:06,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12feb0d-7e0a-4885-9af4-a0cf81636681/bin/utaipan-verify-SwPr7d2a91/cvc4 [2023-11-25 00:10:06,608 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12feb0d-7e0a-4885-9af4-a0cf81636681/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-25 00:10:06,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12feb0d-7e0a-4885-9af4-a0cf81636681/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2023-11-25 00:10:07,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:10:07,643 INFO L262 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-25 00:10:07,647 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:10:07,668 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-25 00:10:07,668 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-25 00:10:07,733 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-25 00:10:07,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [338966831] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-25 00:10:07,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2114718105] [2023-11-25 00:10:07,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:10:07,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:10:07,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12feb0d-7e0a-4885-9af4-a0cf81636681/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:10:07,744 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12feb0d-7e0a-4885-9af4-a0cf81636681/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:10:07,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12feb0d-7e0a-4885-9af4-a0cf81636681/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-25 00:10:08,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:10:08,429 INFO L262 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-25 00:10:08,432 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:10:08,527 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-25 00:10:08,527 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:10:08,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2114718105] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:10:08,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2023-11-25 00:10:08,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5, 5, 5] total 10 [2023-11-25 00:10:08,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613370332] [2023-11-25 00:10:08,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:10:08,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-25 00:10:08,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-25 00:10:08,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-25 00:10:08,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-25 00:10:08,530 INFO L87 Difference]: Start difference. First operand 259 states and 320 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-25 00:10:11,038 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-25 00:10:13,044 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-25 00:10:15,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:10:15,730 INFO L93 Difference]: Finished difference Result 261 states and 322 transitions. [2023-11-25 00:10:15,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-25 00:10:15,731 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 92 [2023-11-25 00:10:15,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:10:15,733 INFO L225 Difference]: With dead ends: 261 [2023-11-25 00:10:15,733 INFO L226 Difference]: Without dead ends: 261 [2023-11-25 00:10:15,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 447 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-11-25 00:10:15,734 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 225 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2023-11-25 00:10:15,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 469 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 88 Invalid, 2 Unknown, 0 Unchecked, 7.2s Time] [2023-11-25 00:10:15,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2023-11-25 00:10:15,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 260. [2023-11-25 00:10:15,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 245 states have (on average 1.2326530612244897) internal successors, (302), 253 states have internal predecessors, (302), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2023-11-25 00:10:15,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 321 transitions. [2023-11-25 00:10:15,745 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 321 transitions. Word has length 92 [2023-11-25 00:10:15,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:10:15,745 INFO L495 AbstractCegarLoop]: Abstraction has 260 states and 321 transitions. [2023-11-25 00:10:15,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-25 00:10:15,746 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 321 transitions. [2023-11-25 00:10:15,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-25 00:10:15,747 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:10:15,747 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:10:15,759 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12feb0d-7e0a-4885-9af4-a0cf81636681/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (10)] Ended with exit code 0 [2023-11-25 00:10:15,961 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12feb0d-7e0a-4885-9af4-a0cf81636681/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-11-25 00:10:16,165 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12feb0d-7e0a-4885-9af4-a0cf81636681/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-25 00:10:16,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12feb0d-7e0a-4885-9af4-a0cf81636681/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12feb0d-7e0a-4885-9af4-a0cf81636681/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12feb0d-7e0a-4885-9af4-a0cf81636681/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:10:16,355 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-25 00:10:16,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:10:16,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1997669832, now seen corresponding path program 1 times [2023-11-25 00:10:16,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-25 00:10:16,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [535159379] [2023-11-25 00:10:16,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:10:16,356 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-25 00:10:16,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12feb0d-7e0a-4885-9af4-a0cf81636681/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-25 00:10:16,357 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12feb0d-7e0a-4885-9af4-a0cf81636681/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-25 00:10:16,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12feb0d-7e0a-4885-9af4-a0cf81636681/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-11-25 00:10:17,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:10:17,079 INFO L262 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-25 00:10:17,083 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:10:17,127 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-25 00:10:17,128 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-25 00:10:17,238 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-25 00:10:17,239 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-25 00:10:17,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [535159379] [2023-11-25 00:10:17,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [535159379] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-25 00:10:17,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1521063985] [2023-11-25 00:10:17,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:10:17,240 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-25 00:10:17,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12feb0d-7e0a-4885-9af4-a0cf81636681/bin/utaipan-verify-SwPr7d2a91/cvc4 [2023-11-25 00:10:17,243 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12feb0d-7e0a-4885-9af4-a0cf81636681/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-25 00:10:17,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12feb0d-7e0a-4885-9af4-a0cf81636681/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2023-11-25 00:10:18,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:10:18,393 INFO L262 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-25 00:10:18,396 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:10:18,422 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-25 00:10:18,423 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-25 00:10:18,472 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-25 00:10:18,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1521063985] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-25 00:10:18,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752355673] [2023-11-25 00:10:18,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:10:18,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:10:18,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12feb0d-7e0a-4885-9af4-a0cf81636681/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:10:18,474 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12feb0d-7e0a-4885-9af4-a0cf81636681/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:10:18,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f12feb0d-7e0a-4885-9af4-a0cf81636681/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-25 00:10:19,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:10:19,225 INFO L262 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-25 00:10:19,229 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:10:19,239 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-25 00:10:19,240 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-25 00:10:19,241 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-25 00:10:19,243 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 39 [2023-11-25 00:10:19,341 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-25 00:10:19,342 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 26 [2023-11-25 00:10:19,377 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-25 00:10:19,377 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:10:19,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1752355673] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:10:19,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2023-11-25 00:10:19,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5, 5, 5] total 10 [2023-11-25 00:10:19,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948375036] [2023-11-25 00:10:19,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:10:19,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-25 00:10:19,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-25 00:10:19,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-25 00:10:19,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-25 00:10:19,380 INFO L87 Difference]: Start difference. First operand 260 states and 321 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-25 00:10:21,528 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers []